Trends in Roll-Your-Own Smoking: Findings from the ITC Four-Country Survey (2002–2008)

Table 1

Prevalence (%) of exclusive factory-made (FM) use, sometime (“Some”) RYO use, and predominant (“Pred”) RYO use by country and across waves (weighted data).

Wave (year)	Canada			United States			United Kingdom			Australia
	FM	Some RYO	Pred RYO	FM	Some RYO	Pred RYO	FM	Some RYO	Pred RYO	FM	Some RYO	Pred RYO
1 (2002)	81.6	6.2	12.2	92.9	5.1	2.1	69.6	8.8	21.6	73.1	12.6	14.3
2 (2003)	83.0	5.9	11.5	93.4	4.4	2.3	68.2	7.4	24.4	75.2	9.9	14.9
3 (2004)	83.7	6.1	10.2	93.1	4.7	2.2	68.7	6.8	24.5	76.4	9.3	14.3
4 (2005)	83.9	5.1	11.0	91.2	5.9	2.8	67.6	6.2	26.2	77.5	7.8	14.7
5 (2006)	85.0	4.5	10.5	90.2	6.4	3.3	63.2	7.4	29.4	74.9	9.0	16.1
6 (2007)	87.3	4.2	8.6	90.3	4.5	5.2	62.3	6.1	31.5	77.3	7.7	15.0
7 (2008)	87.9	3.3	8.8	89.1	5.2	5.7	62.0	6.6	31.5	78.2	6.4	15.4
𝑃 value for trend	.001	.006	.080	.078	.677	<.001	<.001	.039	<.001	.055	<.001	.131